Automatic wheeled scraper



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ATTORNEY.

J. R. GRAYsoN J AUTOMATIC WHEELED SCRAPER Fniled April 6, 1922 3 Sheets-Sheet 2 July 31, 1923.

J. R. GRAYSON AUTOMATIC WHEELED SCRAPER Filed April a, :s sheets-sheet J INVEN TOR.

ATT'oRNEY.

Patented `luly 31, 1923.

F UNITE ST'irssf;

. PATENTA JOHN' nonnen venlavsoi'a, on KAKABEKA FALLS, ONTARIO', CANADA.

uuroivrirricv WHEELED Seemann.Y

Application filed April 6, 1922.. Serial No. 550,175. Y

To all whom t may concern.:

Be it known that I, JOHN SON, a subject of the King of England, re-

siding at Kakabeka Falls, in the district of Thunder Bay, vin the Province of Ontario and Dominion of Canada, have invented.

of construction as hereinafter shown and described and then specificallypointed out in the claims, and in the drawings illustrative of the preferred embodiment of theinvention Y Figure 1 is a side elevation of the improved apparatus `with the operating parts arranged to hold the receiving pan in load g' transporting position, with the nigh bearing wheel removed and the arched axle inl transverse section.

Fig. 2 is a planvlew wi ranged as in Fig. 1.

'Fig 3 is a view similar to v1, with the operatingl parts arranged to hold the receiving pan in excavating position.

F 4 is an enlarged detail view illustrating the construction and operation of thel supports for-the slidable tongue andmecha- A l extends through the vlinks-*'22 between the nism actuated thereby. Y

Fig. 5 is an enlarged transverse section on the line 5 5 of Fig. 4,looking"in the direction of theV arrow.

Fig. 6 is an enlarged detached sideview of the cam lever.

Fig. 7 is an edge view of the member shown in Fig. 6.

`The improved device includes an arched axle 10 and bearingv wheels 11. YA supporting frame comprises side portions 12 and connectingl forwardly converging portions lisswingingly coupled to the axles near the journals for the wheels 11 by plates 14.

The portions 12 of the frame are reinT ROBERT 'GRAY- h the parts ar-n forced byf'a transverse brace or strut'15,

y formed from an L-bar as'shownpreferabll in Fig. 4.

Mounted rotatablyupon 'thel arched por-Mi tion of the axle"10 are inverted*Vsh'aped` hanger devices 16, having link members 17 VpivotedV respectively at 18" to hold the rear portion of the scraper, asl hereafter eX'- plained.

The combined lscoop "and ,carrying bucket is represented asa whole at 19 and includes a cut-ting 'or earth penetrating front edge 20, preferably in flat V-shape asV shown in Fig. 2.

The link members 17 arer pivoted at 2'1 to the sides of the bucket near its rearA end,l while other link members -22 arepivoted atY 23 to the'v opposite sides of the bucket. TheV link members 22 are curved as shown fat 24 at their free ends and each providedk with a longitudinally directed slot 25. A tie rod 26 yextends through the slots 25 "and like? wise through the links 22.1and the other leg of the hanger deviceV 16 and is'pro-y serves as a binder elementtohold'l the links 22 and hangers in coupledrelatiomrbut also asV an elongated pivot on Which'the links.

and hangers swing. .Y1

Mounted tol swing intermediate the ends upon. the combined tieand pivot rod 26 are armsn2'8 enlarged at 29`at=oneend, and with U-shaped slots 29 through the'enlarged: por- 1- tions, the legs of .thefs'lots .being of. un"-y equalA length, asshown'- more particularly in Fig. 6 which represents one of thesearms enlarged and detached Another tie rod 30 slots 25I and the pivotedfends23, and is Yprovided with bindingfv nuts 31 ybearing pins 34, and attached to the rod 32 are trip` fingersl 35 which extendV respectively be-f tween the .tief rod 30 and the pins 34.

:Attachedtothe tie rod 32'is afoot[levert 36 which operates toy rotate the rod `32.and

fAttaehedto thes'des of the .bucket 19AM-e.

rearwardly .opening hooks 41, and swinging at 42 from the lower part of the tongue 39 [are rearwardly diverging rods 43; havingl terminal. hooks 44` engaging the ,hooks 4l wheny the bucketis in `one posi-tion.

supporting yoke device, 45 depends from the,` frame members .13, Ito.Y support; the; rod portions 43 and prevent them from dragging on the ground when .not in use as Risingfrom the housing ,.38 intermediate the, ends are. earsV 46, :andifpivoted atl 47 .be-

tween the ears is a latch bar 48 having downf wardly. and inwardly opening hoo-ks 49; Aand i 50 at theends and inclined terminalsl and 52 in i advance ofthe ilrooks, and with .lateral projections 53 .and .54,jat the inclined ten minals. v

Attached to. tongueA y39.- .near ,its -rear 4,end

i. are other ears55. through which a rocksha-ft 56-is journaled, .whilesimilar ears57 ,arefattached to the. tongue-.39 in; advanceof the housing andl supporta similar short rock shaft 5,8.

Connected respectively to the rockfshafts 56 and 58 are lever arms 59 and 60, the-latter. being coupledlby anoperating-rod 61.

Attached .to thetongue `39 nearits rear end isa notched .segment 62, -.and.--.pivo-ted ati63 to the segment is a lever64, ythe:latter cou* pledpto :the lever v.armz59 by. a link65. The lever 64 is provided witha Isuitable p awl= device :of the usual Aconstruction `and ,indicated at 66 and adapted to engage thexteethof :the segment and-.holdetheQle-ver. and the parts-associated therewith iinl adjusted position.

Depending. respectivelymfrom they rock shafts `56y and: 58, are tripy lugs .67 .and 68 operative on opposite'sides .ofyzthe member "48 and against.y the. lateral4 projections *.53

and 54, toiswing ztheilatchbar; 48 uponfitsA pivot 47, and thus'release the hooks 49: from engagement with .the ro ckshafts56 and :58,

when :the shipper vleverr 64 is actuated.

"Thus'zwhen the tongue 39 is ,in its forward position `and fthe -lever I64 likewise innits forward Apositionasi shown sin 1F lgs.. 1,2 and 4,

thechook' 5() of the latch barg 48 will beengaged with the rear rockshaft 56. and the '-hook 49-disengaged from thlefifoirwardrock shaft 58, and then when'the ytongue 29 is in its rearward. positionfand thelever64 in its forward position, asshown inltig v3, the hook 49 of the latch bar will engage the forward rock shaft 58 while the lhook 5() will be disconnected fromy the rear rock shaft 56. The latch .bar-48 is rigidly connected-.to :its pivot 47, and rigidly coupled to the pivot eXter nally of one ofthe ears 46 a rnanually operative lever' arm V69 extending rearwardly andinconvenient positionV for the driver on the seat, the latter indicated at 7 0.V

Aspring 7.1 is-attached to the lever 69 to .maintain the same in depressed position with the latch bar48 also yieldably in. e11- gagement with the rea-r rock shaft 56.,v

Mountedfor rotation-on the, arehedfportion ef .the axle 10 isga plate 72V andgpivot ally connectedat 73 and 7 4 to theQp-latetare relatively heavy linksf75 and 7.6. 5

When thebueket 19v is to be disposed. in

operative on vexcavating position, as ..ShO-wn in Fig. 3, in full lines, theshipper,leveri64iis disposed in its forwardposition torelease the rocking armg48 from engagement-.with the rock shaft 5.6and the teai'n `orwvofther trac-tive force moved rearwardly carry the tonguey rearwardly into the posi tion shown inv Fig. 3, with the ends 57 bearing against the forward/x endbf the; housing 38 and -the hook 49 in.engagementwith-zthe forward rock shaft y58. f `Where the tractor jdevice'fis. employedas an operative force, it ,may beef greatenad vantage to .move the `eYcavatQli.apizwhll forwardly, o-r toward the tractor, .butwhen draft animals .are employedas a.. pulling force, 1t may be.morefadantageousqtoback i the team toward the excavator apparatus. In either event the backward movement of the tongue will causej the `links f7 5 S:andn76 to; swing the arched, portion.f0fi the `axletl-OV into its rearward .or lower. position, asssho-.wn

inFig...3. y

Assuming that the rod 30 isfelgaged'in-the f shorter arm-.0f 7thefslot.529., ithe QperatOr ,depresses the foot lever 36 `and thusncausesgthe arm 34 to transfer the rod- '30 to the-longer leg of the slotvand thus release ithefnose of the bucket. and-cause the latter -toigdrop into earth engaging position.. as! shownV :in

Fig. 3,1 the pull rods43.'thereaftenholding ythe nose toI itsawork, while fthe baickward;

pressure causes the curved -portions24 ofthe links 22 tofengage the, arched portion off-the axle and limit the rearward..movement a i v When the bucket is filled or .provided-'with its load the `.operater draws the' lever; '64

- rearwardly to cause the trip lugsg68,to=.en

gage ,the lateral:v projections 5,3v and .'eleyagte the adjacent end of the rock leverf48and thus release the tongue .39and permit fit to be :drawn fo rwardly; :through the? housing; 38 and cause the links 75.7ahd;86f. tl the arched portion.o f-theaxle-lOint per -.position asi inA Fig.v 1,;andfthus .elevate the bucket, theoperatorat 'theisameqtime actuating the member 28- andv ,restoring-the llO lrod 30 to its seat in theshorter leg of the slot 29. rl`his will elevate the nose of the bucket and hold the latter in substantially horizontal position readyV to be conveyed to a place where the load is to be dumped. `When this lv:point is reached, the operator disconnects the pull rods 43, when the `nose 2O of the bucket will drop to the ground and the pulling force ofthe tongue continues, the bucket will be drawn into the positionshown by dotted lines in Fig. 3 and dump the load. lVhen the load has been dumped the operator restores the bucket to load carrying position and returns it to the excavating position and the operation repeated.

The apparatus can be manufactured in any size and capacity and can be employed wherever a combined scraper and excavator is required.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood that modifications within the scope of the claimed invention may be made in the construction without departing from the principle of the invention or sacrificing any of its advantages.

v1Having thus described the what is claimed as new is In a wheeled scraper, a supporting frame, an upwardly arching axle mounted on said frame and having carrier wheels, a draft tongue slidable relative to said frame, couping means between said draft tongue and the arching portion of said axle, means for holding said draft tongue in its forward and rearward positions, an excavating bucket, means for suspending said bucket from said axle portion, whereby when the draft tongue is Vin its rearward position the bucket will be disposed in excavating position and when the draft tongue is in its forward position the bucket will be disposed in load transporting position.

2. In a wheeled scraper, a supporting invention,

frame, an upwardly arching axle'mounted` on said frame and having carrier wheels, a draft tongue slidable relative to said frame, coupling means between said draft tongue and the arching portion of said axle, rock shafts carried by said tongue in spaced relation, a rocker arm supported relative to said frame and having terminal hooks adapted to be alternately engaged with said rock shaft to.

hold the tongue in its forward and rearward positions, an excavating bucket, means for suspending said bucket from said axle arch! ing portion, and means for actuating said rocker arm to alternately engage the terminal hooks with the rock shaft and hold the tongue in its forward and rearward posi- Y tions.

ln a wheeled scraper, a supporting frame, an upwardly arching axle mounted on saichframe and having carrier wheels, a

housing carriedk by said fframe, a drive tongue slidable through said housing, cou-y a. In a'wheeled scraper, a supportingy frame, an `upwardly arching axle mounted on said frame and having carrier wheels, a draft tongue slidable relative to the said frame, couplingmeans between said draft tongue andthe arching portion of said axle, bell crank members including vrearwardly and forwardly directed legs swinging upon said axle arching portion, 'an excavating bucket, rear suspension links pivoted respectively to said bucket near` its rear end and to the rear legs of said bell crank member, forward suspension links pivoted at one end to the bucket at its forward end and having longitudinally directed slots, a pivot extend ing through the forward leg of the bell crank member and the slot of the forward legs of the bell. crank members, a lever arm pivoted intermediate its ends to the pivot of the forward arm of the bell crank member and provided with an inverted U-shaped slot, a rod connected at its/ endsin said forward links and extending through the slots of the lever arms, pull rods connected to said supporting frame and detachably coupled to said bucket, means for holding said draft tongue inl its forward and rearward positions, and Vmeans under the control of the operator to transfer the rod from the shorter to the longer arm of the slot.

5. In a wheeled scraper, a supporting frame, an upwardly arching axle mounted on said frame and having carrier wheels, av

draft tongue slidable relative tosaid frame, coupling means between said draft tongue and the arching portion of said axle, vbell crank members including rearward and forwardly directed legs swinging upon said axle arching portion, an excavating bucket, rear suspension links pivoted respective to said bucket near its rear end and to the rear legs of said bell crank members, forward suspension links pivoted at one end to the bucket at its forwardl end and having a longitudinally directed slot and with its upper portion curved and adapted to engage the arched portionof the axle when the bucket is in operative' and load transport ing position, a pivot extending through the forwardlegof the bell crank member and Y the slotgof ,the forward legs of the bell Crank members, aller/'er arurpvoted. intermediate its er1-os; to the pivot of 'die forward arm of the :bell crank members and provided with aninverted Lol-shaped Slob, a rod Connected at its ends in said forward links and extending through the slots ofthe levervarms, pull detaeliably Coupled tok Said llo-uole, hmeans for holding said draft v`tongue in i-t'sl Jforand rearward positions, z.,r1d irieams the eonigroltoil: bho'operatorto transarm o-ft'lie slot.

En testimony-whereof, hereto. I JOHN; ROBERT GRAYSQN f` e rod from folie sho-.rter to the longer.`

V f Y E5 adi-X- my ySignature 

